package com.erms.dao;

import java.util.List;
import org.hibernate.LockMode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.erms.bean.Homework;

/**
 * A data access object (DAO) providing persistence and search support for
 * Homework entities.
 * Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions.
 * Each of these methods provides additional information for how to configure it
 * for the desired type of transaction control.
 * 
 * @see com.erms.bean.Homework
 * @author MyEclipse Persistence Tools
 */
public class HomeworkDAO extends HibernateDaoSupport {
	private static final Logger	log			= LoggerFactory
													.getLogger(HomeworkDAO.class);
	// property constants
	public static final String	CONTENT		= "content";
	public static final String	PASS		= "pass";
	public static final String	SCORE		= "score";
	public static final String	EVALUATION	= "evaluation";
	public static final String	NOTE		= "note";
	public static final String	TIME		= "time";

	protected void initDao() {

		// do nothing
	}

	public void save(Homework transientInstance) {

		log.debug("saving Homework instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Homework persistentInstance) {

		log.debug("deleting Homework instance");
		try {
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Homework findById(java.lang.Integer id) {

		log.debug("getting Homework instance with id: " + id);
		try {
			Homework instance = (Homework) getHibernateTemplate().get(
					"com.erms.bean.Homework", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Homework instance) {

		log.debug("finding Homework instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {

		log.debug("finding Homework instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Homework as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByContent(Object content) {

		return findByProperty(CONTENT, content);
	}

	public List findByPass(Object pass) {

		return findByProperty(PASS, pass);
	}

	public List findByScore(Object score) {

		return findByProperty(SCORE, score);
	}

	public List findByEvaluation(Object evaluation) {

		return findByProperty(EVALUATION, evaluation);
	}

	public List findByNote(Object note) {

		return findByProperty(NOTE, note);
	}

	public List findByTime(Object time) {

		return findByProperty(TIME, time);
	}

	public List findAll() {

		log.debug("finding all Homework instances");
		try {
			String queryString = "from Homework";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Homework merge(Homework detachedInstance) {

		log.debug("merging Homework instance");
		try {
			Homework result = (Homework) getHibernateTemplate().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Homework instance) {

		log.debug("attaching dirty Homework instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Homework instance) {

		log.debug("attaching clean Homework instance");
		try {
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static HomeworkDAO getFromApplicationContext(ApplicationContext ctx) {

		return (HomeworkDAO) ctx.getBean("HomeworkDAO");
	}
}
